Infinity Blade II has been on the App Store for a few months now, but there's been something lingering even further off in the distance: ClashMob. We first heard about this intriguing feature shortly after the game was announced alongside the iPhone 4S last fall, with developer Chair Entertainment promising that it would add a new kind of social gaming functionality to the gorgeous hack-and-slash affair. It's finally available today, alongside a small stack of other improvements.